Who manufactures A. O. Smith?

Who manufactures A. O. Smith is A. O. Smith Corporation itself, which is a large American manufacturer headquartered in Milwaukee, Wisconsin, USA, that manufactures its own water heaters in its own factories in the United States. A. O. Smith Corporation was founded in 1874 in Milwaukee, Wisconsin, by Charles Jeremiah Smith as C. J. Smith and Sons, and is one of largest water heater manufacturers in world, publicly traded on NYSE as AOS. A. O. Smith manufactures A. O. Smith water heaters in factories in the United States, including plants in Ashland City, Tennessee, where it makes gas and electric tank water heaters, and in other locations like McBee, South Carolina, and Juarez, Mexico for some components. A. O. Smith also manufactures other brands it owns, including State Water Heaters, American Water Heaters, and John Wood in Canada, all made in same factories with same quality. A. O. Smith Corporation designs, engineers, and manufactures its water heaters from raw materials like steel and glass coating, with Blue Diamond glass coating for corrosion resistance. So manufacturer is A. O. Smith Corporation, American company headquartered in Milwaukee, Wisconsin, USA, founded in 1874, manufactures in Tennessee and other US plants, not made by third party, it is original equipment manufacturer that makes its own products and also makes State and American brands.